| Description | Solid phase sandwich ELISA for the determination of human A ß (1-40) (FL) in EDTA-plasma, cerebrospinal fluids, serum, cell culture media or the extract from brain tissue. For research use only, not for use in diagnostic procedures. | Solid phase sandwich ELISA for the determination of human soluble a-Klotho in serum and EDTA-plasma. For research use only, not for use in diagnostic procedures. | Radioimmunoassay (RIA) for the determination of human 17ß-Estradiol (E2) in serum. FDA registered 510(k) Exempt. For In-Vitro Diagnostic Use. | Radioimmunoassay (RIA) for the determination of glucagon in human plasma. FDA exempt, can be used for in-vitro diagnostics. | Enzyme immunoassay (ELISA) for the determination of Tryptophan in urine, serum, and plasma. For research use only, not for use in diagnostic procedures._x000D_ |